Murphy is now 20 weeks (wow!) and has always been very consistent in his weight gain - 1lb per week since we got him at 12 weeks. In the last three weeks, however, he gained 2 a week! He is 23lbs now! We haven't altered his food in anyway, in fact, had to eliminate treats for a while due to some tummy issues. Does this seem on par to everyone? FYI - his mother was 38lbs and his father 35 so we are told to expect the same. I'm not sure when to expect him to stop growing but I assumed it wouldn't be until he was 1. Thanks!